All Terpenes

Alpha Terpineol

Alpha-terpineol is a terpene alcohol with a soft lilac aroma over gentle pine, the most common of five terpineol siblings. It appears in more than 150 plants including lilac, eucalyptus, and pine, and it lends a powdery floral smoothness to our profiles.

Floral Piney Woody

Alpha-terpineol, also denoted as α-terpineol, is the most common of five closely related isomers, or sibling terpenes, within the terpineol family (the other members being beta-, gamma-, delta-, and 4-terpineol). It conveys a decidedly lilac aroma featuring heavy tones of pine.

This compound is produced by cannabis and more than 150 other plant species, including eucalyptus, freesia, lemon peel oil, lime blossoms, marjoram, narcissus, oregano, pine, and rosemary. It is found commonly in cultivars of cannabis that also produce relatively rich amounts of pinene.

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Alpha Terpineol
Chemical Structure
At a glance
woodycitrusherballemonfloralterpenic
CAS number
98-55-5
Formula
C10H18O
Molecular weight
154.25 g/mol
Boiling point
219 °C
Flash point
90 °C
FEMA number
3045
PubChem
CID 17100

the alpha isomer specifically; terpineol in commerce can also mean a mixed-isomer grade (8000-41-7)

Common questions

What does alpha-terpineol smell like?

Lilac blossom with a clean pine undertone: floral, powdery, and smooth rather than sharp.

How many terpineols are there?

Five closely related isomers: alpha, beta, gamma, delta, and terpinen-4-ol. Alpha is by far the most common in nature and is the one on this page.

Related terpenes

Alpha Pinene · woody, sweet, herbal Linalool · floral, sweet, green
Smell it at the source

This terpene occurs naturally in these botanical oils, available from our sister store, The Essential Oil Company.

Eucalyptus essential oil Eucalyptus Tea Tree Australia essential oil Tea Tree Australia Lime essential oil Lime
References: PubChem CID 17100 · FEMA flavor ingredient #3045

Products with Alpha Terpineol listed as a primary terpene:

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